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© CLIMAX MOLYBDENUM COMPANY <br />A Sobsitllary of Phelps Dotlge Mining Conpany <br />July 23, 2003 <br />To: Eric Bower <br />From: Mitch Lapp <br />Subject: Annual 3-Dam Seepwater Lines Leakdown Test Certification <br />COLORADO OPERATIONS <br />Henderson Mill <br />19302 County Rd. 3 <br />Parshall, CO 80468 <br />Metro [303] 271-0107 <br />Out of State [303] 569-3221 <br />Fax (9701725-0228 <br />The 2003 3-Dam seepwater lines leakdown test was completed in the following manner. On July <br />10th the 3-Dam seepwater discharge valves were closed. The pipes were allowed to fill until <br />completely full on the morning of July IS`h. A sma[1 trash pump was used to speed up the filling <br />process. The inlet valves were closed at 9:30 am on July 15`h and the pressure gages were read at <br />9:45 am. The intial readings were 78 psi on the east valve and 76 psi on the west valve. At <br />10:15 am on the July 16~' the pressures were read again with no change. The system was then <br />returned to normal operating conditions. <br />I certify that the test described above was accurate and conducted under my supervision. <br />~~ <br />d-'"= <br />Mitch Lapp <br />Civil Engineer <br />Henderson Operations <br />